1-Pyrrolidinecarboxylic acid, 2-[[(2,5-dioxo-1-pyrrolidinyl)oxy]carbonyl]-, 1,1-dimethylethyl ester, (2R)-
1-Pyrrolidinecarboxylic acid, 2-[[(2,5-dioxo-1-pyrrolidinyl)oxy]carbonyl]-, 1,1-dimethylethyl ester, (R)-
1,1-Dimethylethyl (2R)-2-[[(2,5-dioxo-1-pyrrolidinyl)oxy]carbonyl]-1-pyrrolidinecarboxylate
N-(t-Butoxycarbonyl)-D-proline N-hydroxysuccinimide ester
1-O-tert-Butyl 2-O-(2,5-dioxopyrrolidin-1-yl) (2R)-pyrrolidine-1,2-dicarboxylate